<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    {{ n |  currency }}
    {{ n |  currency("$") }}
  </div>
  <script src="./vue.js"></script>
  <script>
    // 全局过滤器
    /* Vue.filter('currency', (v)=>{
      return "￥"+v
    }) */
    Vue.filter('currency', (v,sign="￥")=>{
      return sign+v
    })
    const vm = new Vue({
      el: '#app',
      data(){
        return {
          n: 10
        }
      }
    })
  </script>
</body>

</html>